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When we protect your filter purchase with our No Worries Guarantee, we mean it!

No Worries...
  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
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  • You’re guaranteed to find expert help!

Learn more about our No Worries Guarantee

Water Filtration Systems & Filters

Discount Filter Store carries a wide variety of water filters and filtration systems to make sure that you have clean water everywhere you need it. We offer camping water filters, RV filters, water bottles for travelers on the go. Purify your office or home’s drinking water with countertop filter systems, commercial grade filters, and whole house filter systems. Our filters are protected by our 100% Price Match Guarantee. We are happy to offer you the lowest possible price on our filters, matching any lower price listed by competitors.

Items 1 to 48 of 322 total

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  • W20CLHD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge
  • W30PEHD American Plumber Whole House Heavy Duty Filter Cartridge
  • W50PEHD American Plumber Whole House Heavy Duty Filter Cartridge
  • W5CIP American Plumber Undersink Filter Replacement Cartridge (2-Pack)
  • 67015 Aquamira Filtered Water Bottle - 1

    Aquamira Filtered Water Bottle (#67015)

    $27.95 Retail Price:  $34.44
  • 3M Aqua-Pure AP1001 Whole House Water Filter Cartridge
  • 3M Aqua-Pure AP110-2 Whole House Water Filter Cartridge
  • 3M Aqua-Pure AP110-3 Whole House Water Filter

    AP110-3 3M Aqua-Pure Replacement Water Filter Cartridge

    $29.99 Retail Price:  $34.49
  • 3M Aqua-Pure AP117 Whole House Water Filter Cartridge
  • AP117RO 3M Aqua-Pure Reverse Osmosis Filter

    AP117RO 3M Aqua-Pure Reverse Osmosis Filter

    $23.99 Retail Price:  $30.23
  • 3M Aqua-Pure AP124-3 Water Filter

    AP124-3 3M Aqua-Pure Replacement Water Filter

    $29.99 Retail Price:  $35.64
  • 3M Aqua-Pure AP-250R Under Sink Water Filter

    AP-250R 3M Aqua-Pure Undersink Water Filter Cartridge

    $29.99 Retail Price:  $41.39
  • 3M Aqua-Pure AP717 Inline Water Filter

    AP717 3M Aqua-Pure Inline Filter System

    $25.99 Retail Price:  $34.49
  • 3M Aqua-Pure APHF-RC Shower Filter Cartridges
  • APLPSF-RC 3M Aqua-Pure Shower Filter Cartridge

    APLPSF-RC 3M Aqua-Pure Shower Filter Cartridge

    $25.99 Retail Price:  $27.36
  • APSH5-RC 3M Aqua-Pure 5-in-1 Shower Filter Cartridge

    APSH5-RC 3M Aqua-Pure 5-in-1 Shower Filter Cartridge

    $27.99 Retail Price:  $33.91
  • AF-10-3690 Aries Replacement Fluoride Filter Cartridge

    AF-10-3690 Aries Replacement Fluoride Filter Cartridge

    $28.99 Retail Price:  $32.19
  • 42633 Brita On-Tap Faucet Filter System - Black / Chrome
  • 42647 Brita AquaView AVFR-200 Faucet Filter Replacement Cartridge
  • ATLANTIS-BLUE-PITCHER Brita 48-Ounce Water Pitcher

    Brita Atlantis Blue Water Filter Pitcher (48 Ounce)

    $26.99 Retail Price:  $33.34
  • 42617 Brita On-Tap FR-200 Faucet Filter Replacement Cartridge - Chrome
  • 35507 Brita Classic OB01 48-Ounce Water Pitcher

    Brita Classic Water Filter Pitcher (48 Ounce, #OB01)

    Regular Price: $27.99

    Special Price: $22.05

  • 42378 Brita Deluxe OB26 80-Ounce Water Pitcher
  • 35503 Brita OB03 Pitcher Replacement Cartridge (3-Pack)

    35503 Brita OB03 Pitcher Replacement Cartridge (3-Pack)

    $23.99 Retail Price:  $29.89
  • 42432 Brita OB03 Pitcher Replacement Cartridge (4-Pack)

    42432 Brita OB03 Pitcher Replacement Cartridge (4-Pack)

    $29.99 Retail Price:  $37.94
  • 42629 Brita Slim OB11 40-Ounce Water Pitcher

    42629 Brita Slim OB11 40-Ounce Water Pitcher

    $20.99 Retail Price:  $26.44
  • 42401 Brita On-Tap FR-200 Faucet Filter Replacement Cartridge - White
  • 40043 Camco TastePURE Inline Large Capacity Filter

    40043 Camco TastePURE Large Capacity Inline Water Filter

    $24.99 Retail Price:  $32.19
  • CRF-950Z-3 PUR Pitcher Replacement Cartridge (3-Pack)

    CRF-950Z-3 PUR Pitcher Replacement Cartridge (3-Pack)

    $25.99 Retail Price:  $36.79
  • 1000R-D Culligan Level 3 Undersink RV and Marine Icemaker and Drinking Water Filter
  • D-30 Culligan Level 2 Undersink Filter Replacement Cartridge
  • FCT-1 Culligan Drinking Water Faucet - Chrome

    FCT-1 Culligan Drinking Water Faucet - Chrome

    $24.99 Retail Price:  $31.04
  • FM-15A Culligan Level 3 On-Tap Faucet Filter System

    FM-15A Culligan Level 3 On-Tap Faucet Filter System

    $22.99 Retail Price:  $28.51
  • FM-5R Culligan Level 3 Faucet Filter Replacement Cartridge
  • HF-150 Culligan Whole House Filter System

    HF-150 Culligan Whole House Filter System

    $21.99 Retail Price:  $26.44
  • IC-1000 Culligan Inline Filter
  • IC-EZ-1 Culligan Level 1 Easy-Change Inline Filter System
  • ISH-100 Culligan Level 2 Inline Shower Filter for 1/2 inch thread Shower Heads
  • P1012581 Culligan Undersink Replacement Filter Cartridge
  • PR-3 Culligan Water Pitcher Replacement Cartridge (3-Pack)
  • PR-3U Culligan Universal Water Pitcher Replacement Cartridge (3-Pack)
  • RC-EZ-3 Culligan Level 3 Easy-Change Inline Filter Replacement Cartridge
  • RFC-BBS-D Culligan Level 4 Whole House Filter Replacement Cartridge
  • RV-600A Culligan Level 1 Inline RV Pre-Tank Exterior Filter
  • RV-700 Culligan Level 1 Inline RV Pre-Tank Exterior Filter
  • RV-800 Culligan Level 1 Inline RV Pre-Tank Exterior Filter
  • SY-1000 Culligan Water Filtration System
  • TS-500 Culligan Large Capacity Inline Filter Replacement Cartridge

Items 1 to 48 of 322 total

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